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Rendering

Counter
Todo
Hydration
Async APIs
Streaming SSR
Typed Events

Data & APIs

Database
Key-Value Storage
CRUD
Realtime WebSockets

Forms & Actions

Forms
File Upload
Client Actions
Server Actions
Server Forms
Form Validation
Auth Form

View source on GitHub ↗

Counter

A minimal state example with bound updates and derived output.

Count: 0

Initial prop: 0

Doubled: 0

Sign: zero